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A Study on the Features of the Velocity Distribution and the Static Pressure Distribution of Oil on a Low-velocity Piston  

Park, Hei-Jae (Institute of Small & Medium Industry Development Co.)
Choi, Jae-Wook (School of Safety Engineering, Pukyong National University)
Kim, Sang-Do (Woochang Co. Ltd)
Publication Information
Korean Chemical Engineering Research / v.48, no.4, 2010 , pp. 450-456 More about this Journal
Abstract
This study was conducted in order to design a piston, part of a shock absorber, and the findings after examining the features of the velocity distribution and the static pressure distribution of oil on a low-velocity piston are as follow. The compression speed of oil passing through an 0.9 mm orifice was 0.0156~0.0642 m/s, and the velocity vector of the velocity distribution and the static pressure distribution had a greater tendency to rotate when the velocity increased. In case of the velocity vector of the velocity distribution and the static pressure distribution with an 0.8mm orifice, the speed changed secondarily, the second pressure-drop was observed and as for the distribution of the streamline around the orifice, a vortex was produced around the center. As for the velocity distribution of oil passing from the compression cylinder to the compact pipe, the velocity was greater in orifice of small diameter. Also, the greater the pressure difference was between the compression cylinder and the compact cylinder, the greater the force it was upon the piston.
Keywords
Shock Absorber; Velocity Distribution; Static Pressure Distribution; Orifice; Velocity Vector;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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